Cited by 89Regulation of Appetite and ObesityIon Channels and ReceptorsBiochemical Analysis and Sensing Techniques

Activation of temperature-sensitive TRPV1-like receptors in ARC POMC neurons reduces food intake

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Jeong, Jae Hoon, Lee, Dong Kun, Liu, Shun-Mei, Chua, Streamson C., Schwartz, Gary J., Jo, Young-Hwan·2018·PLOS Biology

Abstract

Proopiomelanocortin (POMC) neurons in the arcuate nucleus of the hypothalamus (ARC) respond to numerous hormonal and neural signals, resulting in changes in food intake. Here, we demonstrate that ARC POMC neurons express capsaicin-sensitive transient receptor potential vanilloid 1 receptor (TRPV1)-like receptors. To show expression of TRPV1-like receptors in ARC POMC neurons, we use single-cell reverse transcription-polymerase chain reaction (RT-PCR), immunohistochemistry, electrophysiology, TRPV1 knock-out (KO), and TRPV1-Cre knock-in mice. A small elevation of temperature in the physiological range is enough to depolarize ARC POMC neurons. This depolarization is blocked by the TRPV1 receptor antagonist and by Trpv1 gene knockdown. Capsaicin-induced activation reduces food intake that is abolished by a melanocortin receptor antagonist. To selectively stimulate TRPV1-like receptor-expressing ARC POMC neurons in the ARC, we generate an adeno-associated virus serotype 5 (AAV5) carrying a Cre-dependent channelrhodopsin-2 (ChR2)-enhanced yellow fluorescent protein (eYFP) expression cassette under the control of the two neuronal POMC enhancers (nPEs). Optogenetic stimulation of TRPV1-like receptor-expressing POMC neurons decreases food intake. Hypothalamic temperature is rapidly elevated and reaches to approximately 39 °C during treadmill running. This elevation is associated with a reduction in food intake. Knockdown of the Trpv1 gene exclusively in ARC POMC neurons blocks the feeding inhibition produced by increased hypothalamic temperature. Taken together, our findings identify a melanocortinergic circuit that links acute elevations in hypothalamic temperature with acute reductions in food intake.

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Authors
Jeong, J. H., Lee, D. K., Liu, S.-M., Chua, S. C., Schwartz, G. J., & Jo, Y.-H.
Affiliations
Albert Einstein College of Medicine (US)
Corresponding author
Jo, Young-Hwan
Venue
PLOS Biology
Published
2018-04-24
Volume
16
Issue
4
Pages
e2004399
ISSN
  • 1544-9173 (ISSN-L)
  • 1545-7885
OpenAlex
W2799613833
Cited by
89
References
56
Citations by year
2026: 8 · 2025: 10 · 2024: 9 · 2023: 7 · 2022: 14 · 2021: 13 · 2020: 13 · 2019: 7 · 2018: 8
FWCI
5.77
Type
journal article
Language
en
Open access
Locations
  • PLoS Biology (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
National Institute of Diabetes and Digestive and Kidney Diseases (DK-020541, R56DK092246, DK092246, R01DK092246, P60DK020541, P30DK026687, P30DK020541)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
  • Life Sciences › Neuroscience › Sensory Systems › Ion Channels and Receptors
  • Health Sciences › Nursing › Nutrition and Dietetics › Biochemical Analysis and Sensing Techniques
Keywords
TRPV1, proopiomelanocortin neurons, arcuate nucleus, hypothalamus, dietary intake, hypothalamic temperature, melanocortin system, capsaicin, optogenetics, treadmill running, feeding inhibition
MeSH terms
Channelrhodopsins, Animals, Arcuate Nucleus of Hypothalamus, Bacterial Proteins, Capsaicin, Eating, Enhancer Elements, Genetic, Female, Gene Expression Regulation, Luminescent Proteins, Male, Mice, Transgenic, Neurons, Physical Conditioning, Animal, Pro-Opiomelanocortin, Temperature, Signal Transduction, Genes, Reporter, Receptors, Melanocortin, TRPV Cation Channels, Mice, Gene Knockout Techniques, Gene Knock-In Techniques, Single-Cell Analysis, Optogenetics

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